OffHeapFSTStore (elasticsearch-extend 3.2 API)

java.lang.Object
- org.apache.lucene.util.fst.OffHeapFSTStore

All Implemented Interfaces:

Accountable, FSTStore
```
public final class OffHeapFSTStore
extends Object
implements FSTStore
```
Provides off heap storage of finite state machine (FST), using underlying index input instead of byte store on heap

Constructor Summary

Constructors
Constructor Description

OffHeapFSTStore()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`FST.BytesReader`	`getReverseBytesReader()`
`void`	`init(DataInput in, long numBytes)`
`long`	`ramBytesUsed()`	Return the memory usage of this object in bytes.
`long`	`size()`
`void`	`writeTo(DataOutput out)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.lucene.util.Accountable
getChildResources

- Constructor Detail
  - OffHeapFSTStore
```
public OffHeapFSTStore()
```
- Method Detail
  - init
```
public void init(DataInput in,
                 long numBytes)
          throws IOException
```
    Specified by:
    
    init in interface FSTStore
    
    Throws:
    
    IOException
  - ramBytesUsed
```
public long ramBytesUsed()
```
    Description copied from interface: Accountable
    
    Return the memory usage of this object in bytes. Negative values are illegal.
    
    Specified by:
    
    ramBytesUsed in interface Accountable
  - size
```
public long size()
```
    Specified by:
    
    size in interface FSTStore
  - getReverseBytesReader
```
public FST.BytesReader getReverseBytesReader()
```
    Specified by:
    
    getReverseBytesReader in interface FSTStore
  - writeTo
```
public void writeTo(DataOutput out)
             throws IOException
```
    Specified by:
    
    writeTo in interface FSTStore
    
    Throws:
    
    IOException